Reply To: Gallery does only work with a small amount of (large) pictures

Actually our themes is already using lazy load feature, so when image loaded it will be loaded when you see it. Also in there you have a big amount of images and large file size too, i think its normally. So it will be take some time to load your image and to show up it properly. Try to optimize file size of your image to reduce time when load your image and maybe you can try to set 15 images on Partial load image count option.